作者: Hoi-Gu Jang , Kwang Ha , Jong-Ho Kim , Yoshihiro Sugi , Gon Seo
DOI: 10.1016/J.APCATA.2014.02.028
关键词: Economies of agglomeration 、 Porosity 、 Lanthanide 、 Catalysis 、 Inorganic chemistry 、 Crystallinity 、 Chemistry 、 Zeolite 、 Phase (matter) 、 Methanol
摘要: The ceria- and lanthana-modified MFI zeolites were prepared extensively investigated to verify the function of lanthanide oxides as blocking modifiers. Their catalytic behavior in methanol-to-olefin (MTO) conversion was explained by characterization results regarding crystallinity, agglomeration, porosity, surface composition, uptakes o-xylene methanol. ceria impregnated on formed nano-sized small particles with two oxidation states +3 +4 (Ce2O3 CeO 2) located predominantly external surface. So, impregnation maintained porosity activity MFI, induced little change product composition MTO. However, lanthana dispersed a single (La2O3) phase its micropores, well micropores reduction acidity lowered did not have any negative effects performance, while locations systematically discussed relation their performance